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Frequently Asked Questions
What is the process for professional solar panel cleaning?
The process utilizes a specialized water-fed pole system paired with highly purified, deionized water. This system gently scrubs away baked-on dirt, bird droppings, and pollen without using high pressure or harsh chemical detergents. Rinsing with pure water ensures that the glass dries completely spot-free, leaving no mineral film behind to block the sunlight.
Will dirty solar panels reduce my overall energy production?
Yes, dirt, dust, and environmental pollution can create a physical barrier on the glass that blocks sunlight. Studies show that dirty panels can experience a drop in energy efficiency of 15 percent to 25 percent over time. Keeping the surface clean ensures that the photovoltaic cells receive the maximum amount of light to run at full capacity.
Is it safe to clean solar panels with a standard pressure washer?
No, using a standard high-pressure washer or harsh chemical soaps is highly dangerous for solar panels. Extreme pressure can crack the protective tempered glass or break the watertight seals, which immediately voids the manufacturer warranty. Professional cleaners use low-pressure, water-fed poles with soft bristles specifically designed to be gentle on solar glass.
How often should solar panels be cleaned in Pennsylvania?
In the Harrisburg area, we generally recommend cleaning solar panels at least once or twice per year. A spring cleaning is ideal to remove the heavy layer of tree pollen and winter dust, while a late autumn cleaning helps remove falling leaves and bird droppings before the winter snow arrives.
Can cleaning solar panels void my manufacturer warranty?
Cleaning your panels will not void your warranty as long as you follow approved manufacturer guidelines. This includes avoiding abrasive scrubbers, high-pressure streams, and chemical cleaners. Professional solar cleaning companies strictly adhere to these guidelines, using pure water and soft-bristled brushes to keep your warranty fully intact.